What Makes A Serial Killer?

What Makes A Serial KillerAuthor : LaDonna Beaty

Jeffrey Dahmer, John Wayne Gacy, Mark Allen Smith, Richard Chase, Ted Bundy-the list goes on and on. These five men alone have been responsible for at least ninety deaths, and many suspect that their victims may total twice that number. They are serial killers, the most feared and hated of criminals. What deep, hidden secret makes them lust for blood? What can possibly motivate a person to kill over and over again with no guilt, no remorse, no hint of human compassion? What makes a serial killer?

Serial killings are not a new phenomenon. In 1798, for example, Micajah and Wiley Harpe traveled the backwoods of Kentucky and Tennessee in a violent, year-long killing spree that left at least twenty-and possibly as many as thirty-eight-men, women, and children dead. Their crimes were especially chilling as they seemed particularly to enjoy grabbing small children by the ankles and smashing their heads against trees (Holmes and DeBurger 2Cool. In modern society, however, serial killings have grown to near epidemic proportions. Ann Rule, a respected author and expert on serial murders, stated in a seminar on serial murder at the University of Louisville that between 3,500 and 5,000 people become victims of serial murder each year in the United States alone (qtd. in Holmes and DeBurger 21). Many others estimate that there are close to 350 serial killers currently at large in our society (Holmes and DeBurger 22).

Fascination with murder and murderers is not new, but researchers in recent years have made great strides in determining the characteristics of criminals. Looking back, we can see how naïve early experts were in their evaluations; in 1911, for example, Italian criminologist Cesare Lombrosco concluded that "murderers as a group [are] biologically degenerate [with] bloodshot eyes, aquiline noses, curly black hair, strong jaws, big ears, thin lips, and menacing grins" (qtd. in Lunde 84). Today, however, we don't expect killers to have fangs that drip human blood, and many realize that the boy-next-door may be doing more than woodworking in his basement. While there are no specific physical characteristics shared by all serial killers, they are almost always male and 92 percent are white. Most are between the ages of twenty-five and thirty-five and often physically attractive. While they may hold a job, many switch employment frequently as they become easily frustrated when advancement does not come as quickly as expected. They tend to believe that they are entitled to whatever they desire but feel that they should have to exert no effort to attain their goals (Samenow 88,96). What could possibly turn attractive, ambitious human beings into cold-blooded monsters?

One popular theory suggests that many murderers are the product of our violent society. Our culture tends to approve of violence and find it acceptable, even preferable, in many circumstances (Holmes and DeBurger 27): According to research done in 1970, one out of every four men and one out of every six women believed that it was appropriate for a husband to hit his wife under certain conditions (Holmes and DeBurger 33). This emphasis on violence is especially prevalent in television programs. Violence occurs in 80 percent of all prime-time shows, while cartoons, presumably made for children, average eighteen violent acts per hour. It is estimated that by the age of eighteen, the average child will have viewed more than 16,000 television murders (Holmes and DeBurger 34). Some experts feel that children demonstrate increasingly aggressive behavior with each violent act they view (Lunde 15) and become so accustomed to violence that these acts seem normal (Lunde 35). In fact, most serial killers do begin to show patterns of aggressive behavior at a young age. It is, therefore, possible that after viewing increasing amounts of violence, such children determine that this is acceptable behavior; when they are then punished for similar actions, they may become confused and angry and eventually lash out by committing horrible, violent acts.

Another theory concentrates on the family atmosphere into which the serial killer is born. Most killers state that they experienced psychological abuse as children and never established good relationships with the male figures in their lives (Ressler, Burgess, and Douglas 19). As children, they were often rejected by their parents and received little nurturing (Lunde 94; Holmes and DeBurger 64 - 70). It has also been established that the families of serial killers often move repeatedly, never allowing the child to feel a sense of stability; in many cases, they are also forced to live outside the family home before reaching the age of eighteen (Ressler, Burgess, and Douglas 19 - 20). Our culture's tolerance for violence may overlap with such family dynamics: with 79 percent of the population believing that slapping a twelve-year-old is neither necessary, normal, or good, it is no wonder that serial killers relate tales of physical abuse (Holmes and DeBurger 30; Ressler, Burgess, and Douglas 19 - 20) and view themselves as the "black sheep" of the family. They may even, perhaps unconsciously, assume this same role in society.

While the foregoing analysis portrays the serial killer as a lost, lonely, abused little child, another theory, based on the same information, gives an entirely different view. In this analysis the killer is indeed rejected by his family but only after being repeatedly defiant, sneaky, and threatening. As verbal lies and destructiveness increase, the parents give the child the distance he seems to want in order to maintain a small amount of domestic peace (Samenow 13). This interpretation suggests that the killer shapes his parents much more that his parents shape him. It also denies that the media can influence a child's mind and turn him into something that he doesn't already long to be. Since most children view similar amounts of violence, the argument goes, a responsible child filters what he sees and will not resort to criminal activity no matter how acceptable it seems to be (Samenow 15 - 1Cool. In 1930, the noted psychologist Alfred Adler seemed to find this true of any criminal. As he put it, "With criminals it is different: they have a private logic, a private intelligence. They are suffering form a wrong outlook upon the world, a wrong estimate of their own importance and the importance of other people" (qtd. in Samenow 20).

Most people agree that Jeffrey Dahmer or Ted Bundy had to be "crazy" to commit horrendous multiple murders, and scientists have long maintained that serial killers are indeed mentally disturbed (Lunde 4Cool. While the percentage of murders committed by mental hospital patients is much lower than that among the general population (Lunde 35), it cannot be ignored that the rise in serial killings happened at almost the same time as the deinstitutionalization movement in the mental health care system during the 1960s (Markman and Bosco 266). While reform was greatly needed in the mental health care system, it has now become nearly impossible to hospitalize those with severe problems. In the United States, people have a constitutional right to remain mentally ill. Involuntary commitment can only be accomplished if the person is deemed dangerous to self, dangerous to others, or gravely disabled. However, in the words of Dr. Ronald Markman, "According to the way that the law is interpreted, if you can go to the mailbox to pick up your social security check, you're not gravely disabled even if you think you're living on Mars"; even if a patient is thought to be dangerous, he or she cannot be held longer than ninety days unless it can be proved that the patient actually committed dangerous acts while in the hospital (Markman and Bosco 267). Many of the most heinous criminals have had long histories of mental illness but could not be hospitalized due to these stringent requirements. Richard Chase, the notorious Vampire of Sacramento, believed that he needed blood in order to survive, and while in the care of a psychiatric hospital, he often killed birds and other small animals in order to quench this desire. He was released to kill eight people, one of them an eighteen-month-old baby (Biondi and Hecox 206). Edmund Kemper was equally insane. At the age of fifteen, he killed both of his grandparents and spent five years in a psychiatric facility. Doctors determined that he was "cured" and released him into an unsuspecting society. He killed eight women, including his own mother (Lunde 53 - 56). The world was soon to be disturbed by a cataclysmic earthquake, and Herbert Mullin knew that he had been appointed by God to prevent the catastrophe. The fervor of his religious delusion resulted in a death toll of thirteen (Lunde 63 - 81). All of these men had been treated for their mental disorders, and all were released by doctors who did not have enough proof to hold them against their will.

Recently, studies have given increasing consideration to the genetic make-up of serial killers. The connection between biology and behavior is strengthened by research in which scientists have been able to develop a violently aggressive strain of mice simply through selective inbreeding (Taylor 23). These studies have caused scientists to become increasingly interested in the limbic system of the brain, which houses the amygdala, an almond shaped structure located in the front of the temporal lobe. It has long been known that surgically altering that portion of the brain, in an operation known as a lobotomy, has been one way of controlling behavior. This surgery was used frequently in the 1960s but has since been discontinued as it also erases most of a person's personality. More recent development, however, have shown that temporal lobe epilepsy causes electrical impulses to be discharged directly into the amygdala. When this electronic stimulation is recreated in the laboratory, it causes violent behavior in lab animals. Additionally, other forms of epilepsy do not cause abnormalities in behavior, except during seizure activity. Temporal lobe epilepsy is linked with a wide range of antisocial behavior, including anger, paranoia, and aggression. It is also interesting to note that this form of epilepsy produces extremely unusual brain waves. These waves have been found in only 10 to 15 percent of the general population, but over 79 percent of known serial killers test positive for these waves (Taylor 28 - 33).

The look at biological factors that control human behavior is by no means limited to brain waves or other brain abnormalities. Much work is also being done with neurotransmitters, levels of testosterone, and patterns of trace minerals. While none of these studies are conclusive, they all show a high correlation between antisocial behavior and chemical interactions within the body (Taylor 63 - 69).

One of the most common traits that all researchers have noted among serial killers is heavy use of alcohol. Whether this correlation is brought about by external factors or whether alcohol is an actual stimulus that causes certain behavior is still unclear, but the idea deserves consideration. Lunde found that the majority of those who commit murder had been drinking beforehand and commonly had a urine alcohol level of between .20 and .29, nearly twice the legal level of intoxication (31 - 32). Additionally, 70 percent of the families that reared serial killers had verifiable records of alcohol abuse (Ressler 17). Jeffrey Dahmer had been arrested in 1981 on charges of drunkenness and, before his release from prison on sexual assault charges, his father had written a heart-breaking letter which pleaded that Jeffrey be forced to undergo treatment for alcoholism, a plea that, if heeded, might have changed the course of future events (Davis 70, 103). Whether alcoholism is a learned behavior or an inherited predisposition is still hotly debated, but a 1979 report issued by Harvard Medical School stated that "[a]lcoholism in the biological parent appears to be a more reliable predictor of alcoholism in the children than any other environmental factor examined" (qtd. in Taylor 117). While alcohol was once thought to alleviate anxiety and depression, we now know that it can aggravate and intensify such moods (Taylor 110), which may lead to irrational feelings of powerlessness that are brought under control only when the killer proves he has the ultimate power to control life and death.

"Man's inhumanity to man" began when Cain killed Abel, but this legacy has grown to frightening proportions, as evidenced by the vast number of books that line the shelves of modern bookstores - row after row of titles dealing with death, anger, and blood. We may never know what causes a serial killer to exact his revenge on an unsuspecting society. But we need to continue to probe the interior of the human brain to discover the delicate balance of chemicals that controls behavior. We need to be able to fix what goes wrong. We must also work harder to protect our children. Their cries must not go unheard. Their pain must not become so intense that it demands bloody revenge. As today becomes tomorrow, we must remember the words of Ted Bundy, one of the most ruthless serial killers of our time: "Most serial killers are people who kill for the pure pleasure of killing and cannot be rehabilitated. Some of the killers themselves would even say so" (qtd. in Holmes and Deburger 150).

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